Weapon statistics are currently valid only as of 188.8.131.52 from Early Access. The way weapon data is processed has been changed from this build forward, and as such, any statistical changes can only be surmised through testing and guesswork. Accordingly, this data should be treated as valid unless superseded by evidence to the contrary.
From PLAYERUNKNOWN'S BATTLEGROUNDS Wiki
| Default Equipment
Default Equipment are a type of equipment in Battlegrounds. These items are Default Equipment which means you can't get rid of it in your Steam Inventory (except the Parachute which isn't in your inventory, you can't trade nor sell the rest of the items).